<template>
  <div>
    <div id="ChinaMap" style="width: 100%;height: 30vh;"></div>
    <!--<img src="../../../assets/zaiban.png"/>-->
  </div>
</template>

<script>
import { getEnterpriseNum, getFlow } from '@/api/api'

  export default {
    name: 'ChinaMap',
    data () {
      return {
        chinaMap:null,
        geoCoordMap: {
          上海: [121.4648, 31.2891],
          东莞: [113.8953, 22.901],
          东营: [118.7073, 37.5513],
          中山: [113.4229, 22.478],
          临汾: [111.4783, 36.1615],
          临沂: [118.3118, 35.2936],
          丹东: [124.541, 40.4242],
          丽水: [119.5642, 28.1854],
          新疆: [87.9236, 43.5883],
          佛山: [112.8955, 23.1097],
          保定: [115.0488, 39.0948],
          兰州: [103.5901, 36.3043],
          包头: [110.3467, 41.4899],
          北京: [116.4551, 40.2539],
          北海: [109.314, 21.6211],
          南京: [118.8062, 31.9208],
          南宁: [108.479, 23.1152],
          江西: [116.0046, 28.6633],
          南通: [121.1023, 32.1625],
          厦门: [118.1689, 24.6478],
          台州: [121.1353, 28.6688],
          安徽: [117.29, 32.0581],
          内蒙古: [111.4124, 40.4901],
          咸阳: [108.4131, 34.8706],
          黑龙江: [127.9688, 45.368],
          唐山: [118.4766, 39.6826],
          嘉兴: [120.9155, 30.6354],
          大同: [113.7854, 39.8035],
          大连: [122.2229, 39.4409],
          天津: [117.4219, 39.4189],
          太原: [112.3352, 37.9413],
          威海: [121.9482, 37.1393],
          宁波: [121.5967, 29.6466],
          宝鸡: [107.1826, 34.3433],
          宿迁: [118.5535, 33.7775],
          常州: [119.4543, 31.5582],
          广东: [113.5107, 23.2196],
          廊坊: [116.521, 39.0509],
          延安: [109.1052, 36.4252],
          张家口: [115.1477, 40.8527],
          徐州: [117.5208, 34.3268],
          德州: [116.6858, 37.2107],
          惠州: [114.6204, 23.1647],
          成都: [103.9526, 30.7617],
          扬州: [119.4653, 32.8162],
          承德: [117.5757, 41.4075],
          拉萨: [91.1865, 30.1465],
          无锡: [120.3442, 31.5527],
          日照: [119.2786, 35.5023],
          昆明: [102.9199, 25.4663],
          杭州: [119.5313, 29.8773],
          枣庄: [117.323, 34.8926],
          柳州: [109.3799, 24.9774],
          株洲: [113.5327, 27.0319],
          武汉: [114.3896, 30.6628],
          汕头: [117.1692, 23.3405],
          江门: [112.6318, 22.1484],
          辽宁: [123.1238, 42.1216],
          沧州: [116.8286, 38.2104],
          河源: [114.917, 23.9722],
          泉州: [118.3228, 25.1147],
          泰安: [117.0264, 36.0516],
          泰州: [120.0586, 32.5525],
          山东: [117.1582, 36.8701],
          济宁: [116.8286, 35.3375],
          海口: [110.3893, 19.8516],
          淄博: [118.0371, 36.6064],
          淮安: [118.927, 33.4039],
          深圳: [114.5435, 22.5439],
          清远: [112.9175, 24.3292],
          温州: [120.498, 27.8119],
          渭南: [109.7864, 35.0299],
          湖州: [119.8608, 30.7782],
          湘潭: [112.5439, 27.7075],
          滨州: [117.8174, 37.4963],
          潍坊: [119.0918, 36.524],
          烟台: [120.7397, 37.5128],
          玉溪: [101.9312, 23.8898],
          珠海: [113.7305, 22.1155],
          盐城: [120.2234, 33.5577],
          盘锦: [121.9482, 41.0449],
          河北: [114.4995, 38.1006],
          福建: [119.4543, 25.9222],
          秦皇岛: [119.2126, 40.0232],
          绍兴: [120.564, 29.7565],
          聊城: [115.9167, 36.4032],
          肇庆: [112.1265, 23.5822],
          舟山: [122.2559, 30.2234],
          苏州: [120.6519, 31.3989],
          莱芜: [117.6526, 36.2714],
          菏泽: [115.6201, 35.2057],
          营口: [122.4316, 40.4297],
          葫芦岛: [120.1575, 40.578],
          衡水: [115.8838, 37.7161],
          衢州: [118.6853, 28.8666],
          青海: [101.4038, 36.8207],
          西安: [109.1162, 34.2004],
          贵阳: [106.6992, 26.7682],
          连云港: [119.1248, 34.552],
          邢台: [114.8071, 37.2821],
          邯郸: [114.4775, 36.535],
          河南: [113.4668, 34.6234],
          鄂尔多斯: [108.9734, 39.2487],
          重庆: [107.7539, 30.1904],
          金华: [120.0037, 29.1028],
          铜川: [109.0393, 35.1947],
          银川: [106.3586, 38.1775],
          镇江: [119.4763, 31.9702],
          长春: [125.8154, 44.2584],
          长沙: [113.0823, 28.2568],
          长治: [112.8625, 36.4746],
          阳泉: [113.4778, 38.0951],
          青岛: [120.4651, 36.3373],
          韶关: [113.7964, 24.7028]
        },
        // SHData: [

        // ],
        SHData1:[
          [{ name: "上海" }, { name: "黑龙江", value: 1200 }],
          [{ name: "上海" }, { name: "新疆", value: 15 }],
          [{ name: "上海" }, { name: "内蒙古", value: 8 }],
          [{ name: "上海" }, { name: "青海", value: 10 }]
        ],
        option: {
          tooltip: {
            trigger: "item"
          },
          legend: {
            orient: "vertical",
            top: "bottom",
            left: "right",
            data: ["上海"],
            textStyle: {
              color: "#fff"
            },
            selectedMode: "single"
          },
          geo: {
            map: "china",
            label: {
              emphasis: {
                show: false
              }
            },
            roam: false,
            zoom: 1.2,
            itemStyle: {
              normal: {
                areaColor: "#323c48",
                borderColor: "#404a59"
              },
              emphasis: {
                areaColor: "#2a333d"
              }
            }
          },
          series: []
        }
      }
    },
    mounted() {
      // this.initChart([],false)
      this.getFlow()
    },
    methods: {
      initChart(SHData, reload) {
        const color = ['#24CFF4'];
        [
          ["上海", SHData],
        ].forEach((item, i) => {
          this.option.series.push(
            {
              name: item[0],
              type: "lines",
              zlevel: 1,
              symbol: ["none", "arrow"],
              symbolSize: 10,
              effect: {
                show: true,
                shadowBlur : 0.3,
                period: 6,//箭头指向速度，值越小速度越快
                trailLength: 0.4,//特效尾迹长度[0,1]值越大，尾迹越长重
                symbol: 'arrow',//箭头图标
                symbolSize: 6, //图标大小
              },
              lineStyle: {
                normal: {
                  color: color[i],
                  width: 1, //线条宽度
                  opacity: 0.1,//尾迹线条透明度
                  curveness: 0.5, //尾迹线条曲直度
                }
              },
              data: this.convertData(item[1])
            },
            {
              name: item[0],
              type: "effectScatter",
              coordinateSystem: "geo",
              zlevel: 2,
              rippleEffect: {
                brushType: "stroke"
              },
              label: {
                normal: {
                  show: true,
                  position: "right",
                  formatter: "{b}"
                }
              },
              symbolSize: function(val) {
                // return val[2] / 8;
                return 1
              },
              itemStyle: {
                normal: {
                  color: color[i]
                }
              },
              data: item[1].map(dataItem => {
                return {
                  name: dataItem[1].name,
                  value: this.geoCoordMap[dataItem[1].name].concat([
                    dataItem[1].value
                  ])
                };
              })
            }
          );
        });
        if(!reload){
          this.chinaMap = this.$echarts.init(document.getElementById("ChinaMap"));
          this.chinaMap.setOption(this.option);
          let sizeFun = function () {
            this.chinaMap.resize()
          }
          window.addEventListener('resize', sizeFun )
        }else{
          this.chinaMap.setOption(this.option,true);
        }
      },
      convertData(data) {
        const res = [];
        for (let i = 0; i < data.length; i++) {
          const dataItem = data[i];
          const fromCoord = this.geoCoordMap[dataItem[0].name];
          const toCoord = this.geoCoordMap[dataItem[1].name];
          if (fromCoord && toCoord) {
            res.push({
              fromName: dataItem[0].name,
              toName: dataItem[1].name,
              coords: [fromCoord, toCoord]
            });
          }
        }
        return res;
      },
      getFlow(){
        var that = this;
        getFlow().then((res)=>{
          if(res.success){
            let SHData = []
            const ds = res.result
            for(var i in ds){
              let newData = []
              newData.push({name:"上海"})
              newData.push({
                name:ds[i].name,
                value:ds[i].value
              })
              SHData.push(newData)
            }
            that.initChart(SHData,false)
          }
        })
      }
    }
  }
</script>

<style scoped>
  /*#ChinaMap {*/
  /*  width: 100%;*/
  /*  !*height: 280px;*!*/
  /*  height: 30vh;*/
  /*}*/
</style>